金沙江上游SBAS-InSAR滑坡三维形变监测与堵江影响分析

蒋亚楠; 许强; 汤明高; 朱星; 张超

doi:10.3799/dqkx.2025.269

Volume 51 Issue 4

Apr. 2026

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Article Navigation > Earth Science > 2026 > 51(4): 1189-1199

Jiang Yanan, Xu Qiang, Tang Minggao, Zhu Xing, Zhang Chao, 2026. Three-Dimensional Deformation and River Blocking Effects of Landslides in the Upper Jinsha River Revealed by SBAS-InSAR. Earth Science, 51(4): 1189-1199. doi: 10.3799/dqkx.2025.269

Citation:

Jiang Yanan, Xu Qiang, Tang Minggao, Zhu Xing, Zhang Chao, 2026. Three-Dimensional Deformation and River Blocking Effects of Landslides in the Upper Jinsha River Revealed by SBAS-InSAR. Earth Science, 51(4): 1189-1199. doi: 10.3799/dqkx.2025.269

Citation:

Jiang Yanan, Xu Qiang, Tang Minggao, Zhu Xing, Zhang Chao, 2026. Three-Dimensional Deformation and River Blocking Effects of Landslides in the Upper Jinsha River Revealed by SBAS-InSAR. Earth Science, 51(4): 1189-1199. doi: 10.3799/dqkx.2025.269

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Three-Dimensional Deformation and River Blocking Effects of Landslides in the Upper Jinsha River Revealed by SBAS-InSAR

doi: 10.3799/dqkx.2025.269

Jiang Yanan^{1, 2, 3
,
,},
Xu Qiang^{1
,
,},
Tang Minggao¹,
Zhu Xing¹,
Zhang Chao²

1.
State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China
2.
School of Earth and Planetary Sciences, Chengdu University of Technology, Chengdu 610059, China
3.
State Key Laboratory of Precision Geodesy, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430077, China

Received Date: 2025-07-02
Publish Date: 2026-04-25

Abstract

Abstract

This study employs the SBAS-InSAR technique to process Sentinel-1A ascending and descending orbit SAR data from 2014 to 2022, focusing on the impact of the Baige landslide-induced river damming event on the activity of the nearest downstream landslide cluster. The Shadong landslide, which was significantly affected by the damming, was selected for terrain-constrained three-dimensional (3D) deformation inversion using InSAR, with GNSS observations used to validate model performance. Results indicate that, following the damming event, deformation rates of the riverside landslides generally increased by a factor of 3 to 7. In particular, the Shadong landslide, located on the concave bank of the Jinsha River, exhibited a notably impacted area of approximately 1.85 km², with the maximum deformation rate increasing up to 7 times compared to the pre-damming period. The 3D deformation analysis demonstrates that the Aspect-Parallel Flow (APF) terrain-constrained model outperforms the Surface-Parallel Flow (SPF) model in reconstructing the deformation pattern of the Shadong landslide.
- SBAS-InSAR,
- three-dimensional deformation,
- Baige landslide,
- river blocking impact,
- engineering geology

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References(32)

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